Rama Yantra
E112188
Rama Yantra is a large cylindrical astronomical instrument at Jantar Mantar in New Delhi used for measuring the altitude and azimuth of celestial bodies.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Rama Yantra canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T932809 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Rama Yantra Context triple: [Jantar Mantar, New Delhi, hasPart, Rama Yantra]
-
A.
Yantra
Yantra is a major river in northern Bulgaria that flows through cities like Veliko Tarnovo before joining the Danube.
-
B.
Niyati Chakra
Niyati Chakra is a specialized astronomical instrument at Jantar Mantar in New Delhi used for observing and calculating celestial positions.
-
C.
Swayam
Swayam is an Indian government-backed online learning platform that provides free Massive Open Online Courses (MOOCs) from schools, colleges, and universities across the country.
-
D.
Kalki
Kalki is the prophesied future incarnation of the Hindu god Vishnu who is foretold to appear at the end of the current age to restore righteousness and cosmic order.
-
E.
Sudarshana Chakra
Sudarshana Chakra is a legendary spinning disc-like divine weapon in Hindu mythology, most famously associated with the god Vishnu and used to destroy evil.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Rama Yantra Target entity description: Rama Yantra is a large cylindrical astronomical instrument at Jantar Mantar in New Delhi used for measuring the altitude and azimuth of celestial bodies.
-
A.
Yantra
Yantra is a major river in northern Bulgaria that flows through cities like Veliko Tarnovo before joining the Danube.
-
B.
Niyati Chakra
Niyati Chakra is a specialized astronomical instrument at Jantar Mantar in New Delhi used for observing and calculating celestial positions.
-
C.
Swayam
Swayam is an Indian government-backed online learning platform that provides free Massive Open Online Courses (MOOCs) from schools, colleges, and universities across the country.
-
D.
Kalki
Kalki is the prophesied future incarnation of the Hindu god Vishnu who is foretold to appear at the end of the current age to restore righteousness and cosmic order.
-
E.
Sudarshana Chakra
Sudarshana Chakra is a legendary spinning disc-like divine weapon in Hindu mythology, most famously associated with the god Vishnu and used to destroy evil.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical instrument
ⓘ
observational instrument ⓘ |
| associatedWith |
Hindu astronomy
ⓘ
Indian astronomy ⓘ |
| constructionMaterial | masonry ⓘ |
| country | India ⓘ |
| designedBy | Maharaja Jai Singh II ⓘ |
| era | 18th century ⓘ |
| function | direct reading of altitude and azimuth from scales ⓘ |
| hasComponent |
central pillar
ⓘ
cylindrical walls with open top ⓘ graduated scales on floor and walls ⓘ |
| hasSimilarStructure |
Rama Yantra at Jantar Mantar, Jaipur
ⓘ
linked to:
Jantar Mantar, Jaipur
|
| heritageStatus | historical monument ⓘ |
| locatedIn |
Delhi
ⓘ
India ⓘ Jantar Mantar, New Delhi ⓘ New Delhi ⓘ
linked to:
New Delhi, India
|
| measurementSystem | alt-azimuth coordinate system ⓘ |
| namedAfter |
Rama (a figure in Hindu tradition)
ⓘ
linked to:
Rama
|
| observatoryType | fixed masonry observatory instrument ⓘ |
| openTo | sky ⓘ |
| operatedBy | astronomers ⓘ |
| partOf |
Jantar Mantar observatory, New Delhi
ⓘ
linked to:
Jantar Mantar, New Delhi
set of masonry astronomical instruments at Jantar Mantar, New Delhi ⓘ |
| shape | cylindrical ⓘ |
| touristAttraction | yes ⓘ |
| usedFor |
astronomical observations
ⓘ
measuring altitude of celestial bodies ⓘ measuring azimuth of celestial bodies ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Rama Yantra Description of subject: Rama Yantra is a large cylindrical astronomical instrument at Jantar Mantar in New Delhi used for measuring the altitude and azimuth of celestial bodies.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.